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How to print a variable name in C?

  • Difficulty Level : Medium
  • Last Updated : 28 Jun, 2021

How to print and store a variable name in string variable?

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In C, there’s a # directive, also called ‘Stringizing Operator’, which does this magic. Basically # directive converts its argument in a string.




#include <stdio.h>
#define getName(var)  #var
  
int main()
{
    int myVar;
    printf("%s", getName(myVar));
    return 0;
Output:
myVar




We can also store variable name in a string using sprintf() in C.




# include <stdio.h>
# define getName(var, str)  sprintf(str, "%s", #var) 
  
int main()
{
    int myVar;
    char str[20];
    getName(myVar, str);
    printf("%s", str);
    return 0;
Output:
myVar

This article is contributed by Abhay Rathi. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above

Want to learn from the best curated videos and practice problems, check out the C Foundation Course for Basic to Advanced C.
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